Suction box for the manufacture of paper and similar products



Sept. 18 1923.

E. LAMORT E'r 11u.r

SUTION BOX FOR THE MANUFACTURE OF PAPER AND SIMILAR PRODUCTS Filed March 15 1921 3 Sheets-Sheet i I; yew/x11 frnesf ../.zmarf z #ma lgmwf,

VMM/

sept. 18,1923. 1,468,240

E. LAMoRr ET Al.l

SUCTION BOX FOR' THB MANUFACTURE 0F PAPER AND' SIMILAR PRODUCTS Filed March 15', 1921 s sheets-sheet v E. LAMORT ET AL SUGTION BOX FOR THE MANUFACTURE 0F. PAPER AND SIMILAR PRODUCTS Filed March 15, 1921 3 Sheets-Sheet 5 um :NN

Patented Sept. 1S, 1923.

ERNEST Lei/Iona. AND iafiia'cnniiaiuonr, or virer-animations, Esencial.l

sUCTioN Box rcitririi '-iiIeivUrAc'iuR-n ci1 sarna Ann 'siiuinna PnonUoTs. Y

' Appiication iea'iiipa'rch iaiezi. p serial No.45a5so. v

(GRANTEDUimER THE ritevi'sioits oriana aeree tranen a, 1921,41 STAT. t.; 1313*.)

Be it known that we,lEvRNiisfr LAMoRT'and MARCEL LAMORT, citizens of Luxemburg, residing at Vitry-leFrancois, Marne, France, have invented new and4 useful improvements To all 1li/wm t may concern.' f

in and Relating to Suction'loxes for the lsanufacture of Paper and Similar Products (for which we have ifiled an Vapplication in Francedanj2, 1920, Patent No. 508,109), of which theV following is aspe'cification;

This invention relates to a type'of suction i boxes'with rolling `active surfaces and with-v out any slide valves, which boxes are to be used in the manufacture of paper and simi-y lar products. The arrangement in question has these Vadvantages upon the types previously known and hitherto used that they efi'e'ct a saving of metallicv cloth and power, whilst the quality of the products whichv are manufactured is improved. Y Y lt 'willV be (useful to remindhere that the various types of suction boxes as have hitherto been used in machines for making paper or cardboard are divided into two classes, namely;- Y Y Fixed boxes to which a longitudinal alternating movement is sometimes imparted and Rotary boxes acting at the `same time as presses coucheuses, the latterV system'has been proposed withva view to allowing in the case of paper machinery working atla high linear speed of the sheet,.of reducing the considerable wear of the metallic cloth-diie to the friction of the said `metallic cloth on the Ysuction. surfaces of the iixed boxes,

whilst reducing at the same ltimetheY power Y 1 absorbed by the friction. 'Howeven ifthe said rotary boxes are capable of reducing vin a certain degreeV thelwear ofY the metallic cloth, they do notv save power at all. l ndeed, the said boxes are situated at the end of the metallic cloth, they act upon a sheet of paper which is already too much formedand along a surface which is too much reduced, therefore the saidV boxes vwork with an-excessive amount of suction, and require a correspond.-V

ing power for the'production yof the vacuum,

moreover, they are Very expensive; y l y Tlieap'paratus according to the present invention allows of doing awa-yat thesame y time withthe friction surface of the 'iixedl boxes andwithi the slidevalves which arel necessary owing to the variationA of the sizes Y uf'hicli are manufactured on the paper machines.V

. VIn the ji accompanyingdrawings Vwhich. Villustrate the vinvention bywayof example- A "Figure l is ase'ctionalelevation along the.` line l-l of Fig. 2 of a machine constructed YcofY F ig. 2a' front'elevaticnalviewlof the same 'according to the present invention,

machine,VVV

F 3 is a plan view-of the machine, F ig. 4 is a detail showing onem'ode of construction of thel joint made atth'e end of a'roller ofthe machine,

ofconstruction'of the said joint, Figs. Y6, i and Sparefrespectively an eleva- '.tiongplanyand a lateralelevation of an arrangement d'esigned to"rrepla'ce the "slide valves which :are machinery, Y

Fig. 9 is an elevation 'of the modication of construction of the said arrangement.

Reierringito Figs.` l, 2' and 3 it will rbe Fig. is a detail showing a'modification generally used in paper ,j

seen that according to the .presentinvention the machine comprises three horizontal and parallel rollers l, 2 and3'arranged so vas to leave between them a certain Vspace consti-S tuiing` the suction 'chamber' or box'. The axes of the rollers land 2 are situated' injoneand Vthe-saine horizontal planand the said roll-VV ers are on one/side tangent to? the roller v3, and on thefothei'fside to theVV metallic. cloth' 5j along theirY upper generatinglines a- Y' andI c-CZV respectively the` active surface of suction is therefore limited by the rectan-V l gle a--b,' c-cl,.the distance betiveeiiV the two generating' lines afb. and "fc-ZY isY variable b-'ut'it may-be mentioned by lway ofexampleY that in the case Vwhere the Ydiameter Ycf fthe rollersl andEZYiS-QOO mm. the 'said distanceispabout 250mm. J .Y v The rollers l, 2 and '3 areV is; :also provided'fwith a brass jacket which on ball bearings Varranged on thelateral.

mounted l 'the usual manner. f The rollers Y.l and 2 are -pro-V Vvided `with a brass'` jacket and the roller'Bl flanges 6 and lTsupported bythe?longitudiY the said rollers iseiected by nieans'oi' a hyering, a tieht-joint -iit is-obtained between i the rollers 1 and 3 on one side and the roll-y ers Zand l3 on the other side. Moreover, the

said rubber covering allows of ensuringthe carrying over of the rollersy 1V and 8- with a speed corresponding exactly to thatroftv the metallic :cloth as said above, Ythus suppressing,- the friction ofthe cloth on the rollers. The ,lateral tightjoint t at each endV of draulic jointzand Figs. eend 5 ofthe `'accompanying dra-wing illustrate two mod-dica- 'tions of construction of the said ointr.

The rollers, which 4are constructed in the vsaine ymanner 'as' rollers ordinarily used in =the paper machinery,- areV provided at the ends ot the tubes which constitutev thorn, with a metallic ring-8 et) fixed on the inside and provided with a small circula-r groove 9 along' the whole periphery oi the said ring which rotates with the correspond ing roller. A. fixed socket 10 engages in the said ring and carries at one end another ring 11 arranged exactly opposite the ring 8; at its other end the soclret 10 engages with va boss 12 which is secured to the corresponding Figure 6 or 7, or is cast in one with the said `fla-nge; ay certain play l'has beenV lett between the end ofthe socket 10 andthe endeof .the boss 12 in Ysuch a linanner as to allow o'f adjusting the pressure between the two' rings f8 and 11;

The socket 10 and the bossi?) are provided Von theirperiphery with a rubber band 14 4rigidly secured ybyerneans.othoops 15 and 16. The tension of the 4band lll is adjusted in such a man-ner as toqpress the 'ring 1l against the ring 8 with a sutticient pressure. In order-to ensure an air-tightsjo-int between the two said'rings a water circulation has been' provided which can be ensured either bythe moisture of the-sheetot paper itself, or Yby means of a water inlet through a suitable conduitsuch as 17 and ia' :small .channel 18 provided in the socket 10.A

In the.exampleillustrated in Fig. 5 ofthe drawings" the hydraulic joint above men tione'd consists of a'Y double groove 9,f9 formed on two ofi the'taces otthe ring 8 which is integral with 4the tube of the roller atthe 1end of the latter; In this .Inode of con-l struction the socket l() is pressed inrlasuitable Y-inanner'against the end 19 ot :theftube 20 of the corresponding rollers by ineans ot a spiral springQl arranged betweenthe ends out the socket 10 and bossesflQ which are situated opposite to each other and is lodged bellow 'the rubber bandifldQa-bove nientioned. In ythisV case the band lesdoes'not 'act any longer as a spring,` as in the case of Fig. 4,

buty serves v onlyvr for ensuring afti'ghtjoint` It should `be pointed out thatthe two examplesvothydraulic joint indicated inA Figs.` 4 and 5 ofthe drawing and described above are. only given, .by way 'of ,example e and do not limit at allthe invention and that they may be combined and constructed in any other vsuitable lmanner soV as to `ensure the saine result lbeingf'obtainech thatis for y establishingy under'VV thev sheet. :ot':rv papel" `or .moreV r exactly under the f metal-lic clothy that supports it, .a centain'spaice elise/lated from t'heifree air; the said spacebeingY-limiited by thescontact generating lines l-b and c-`d of' the rollers il and 2 with the-cloth oon one side,` and the contact generating; lines zot fthe'rollers and2 withfthe-roller 3 on'fthe other side, and Aconstituting thesuotion box.

As to theproductionof vacuum in the lion-buse is made for this purpose ofthe known mea-ns which are applied inthe sys# tem-s of suction boxes (syphoinfinjector, suetion pump, etc.=). To ethisend, the flanges 6 and 7 are providedwith nozzles coinmunin cating with the-chamber Li; `inthe details of which it is not necessary to enter here. Itshould Ybe pointed out that thanks tothe ball bearings mounted Jon the flanges 6 fand 7 and thanks- ,to the :lubrication which .is constantly ensured -bytheswnter otthehyd-raulic joints, any resistance due to the. friction is suppressed, rthereby tobtainirrglthe-second of the industrial' results mentioned atthe be'e'inningoff the desoription.` f n lWhen the machineY is intended forth'e manufacture of papers having ,l constantly the saine size :such as, for instance, thegpapers tobe used irl-rotary presses for printing' newspapers the suction box. above described works on its whole length. between the flanges 6 and the spacing apart rot-which corresponds t0 the tgreatest width` ofr'uthe paperv which .isY manufactured von thema-1 chi-ne.v .y

Vlll-hen, .on the contrary, the-iqurestieniseof machinery intended :for the -Inanufacture of papers having variable '.sizes, the. arrangement according, tothe present-invention comprises Y a. particular Ydevice replacing. :the

various slide valves which Ahave .hithento A been used-in thislri'nd ofnianufacture .y A

Figs.V v6, 7VV andy .8 of. the.;r aocornpanying.fIYYY drawingson one side andFig; 9.on .theotherv width of the boxes by about @M30 at each end. The width Z1 of the metallic cloth is then about 2M20 cm.

The-group of three boxes above-mentioned and illustrated' in the accompanying.

drawings, is combined with two Ycontinuous rubber bands 24. 25 which are WoundV up on two drums 26, 27 for the bands 2a and 28, 29 for the bands 25, the said'drums beingK capable of a lateral adjustment whilstV remaining in aperfectalignment. This alignment is vobtainedV in an identical manner to that of the pulleys carrying the y belt-guides of the tables of manufacture; consequently it is not necessary to insist here on that point. Y

The said drums are provided with small lateral flanges 26', 27', 28', 29', intended to ensure with certainty the guiding of the above-mentioned rubber bands.

In order to facilitate the reading of the drawings, the two drums 26 and 27 that lead the band 24 have been illustrated.i in the position which they occupy when the ma-V Vchine works for producing sheets of the' maximumsize, that is in the latter case the said band does not intervene. Y

On the contrary the two drums 28 and 29 which lead the band 25 have been illustrated in the position which they occupy when the machine works for producingsheets of the minimum size, that is in the latter case the said band works on its entire Width. Gf course the two members above mentioned may occupy all intermediate positions between the previous ones according to conditions required by the various sizes, which it is necessary to manufacture.

In any case the bands 24C and 25 ensure As shown in the drawing, the arrange-` ment' comprises also an intermediate'drum 30 which acts as a guide and support forV the band 241` and an intermediate drum 31 :the objecto-f which relatively to the Vband 25 is the same as the former drum.

in Fig.V 9 lof theV drawing, it has been supposed thatY thethree boxes were coupled which allowsa simpler construction.

' Indeed; in the latter'case, for a number n' of-boxes it will be enough to establish two flanges and two bands, thenl instead, of 3X7@ rollers, it will be enough to yhave 21H-l rollers. It will be seen that under these Vcircumstances for a machine comprising a group of five boxes, Vwhich number is Considered as a maximum, it will be enough to establish l1 rollersy instead of l5.

` The arrangement which has' been described above hasalso forits result to take a minimum of rspace on the table of n1anufacturewhich constitute an advantage from several practical points of view, whilst maintaining ;an absolute independence of each box, the Y'particular degree of vacuum of'each independent box may be adjusted asV in the case when use` is made "of independent Y Y boxes. Y c n .n On theV other side the arrangement indi` cated in Figs. 6, 7 and 8 of thevdrawing allows of suppressing the slide valves.

Referring to the latter'iigures, it Ywill be seen that additional boxes 32, 33 constructed like the'previous ones, but having similar length have been added to the group Vof main boxes which has been previously described. VThe arrangement of the said additional boxes is that indicated on the drawing (Figs. 6 and 7) the direction of advance-V ment of the cloth being supposed to be that the direction of the arrows' mi,

'in suitable sliding members and the said boxes areY arranged in such a manner that they .will cross each other, if necessary. Moreover, the sliding members of the saidY boxes are prolonged in such a Vmanner as to allow the latter of sliding through an amount which is sulicient for bringing them opposite the tables 22 and 2,3. l f

Vv' hen manufacturing certain products, the said additional boxescomplete the action of the group ofthe main boxes in. the positionV chosen for the entire width of the cloth according to the'results which it is desired to obtain. Here especially, it is possible. to

combine/the actionA of thersaidV boxes with those of manner: p There is only a length l2`between the kthe* main boxes Vin the following j supporting flanges?) and 7 of the main boxesV which length corresponds to thev minimum size and this has forresult that the'additionalV boxes extend them for the suction for of the arrow f; theyY are therefore placed all widths of sheets comprised between the maximum sise i3 andthe minimum Z2. In this casa/ot" cou-rse, the grou-p ol' the main boxes is no longer provided with the bands 2d and 25 which have thusv become unneces sary. Y

Lastly, the sliding boXes above mentioned may be made of any suitable length which enables them to actas main boxes in the case of variable sizes. In order to obtain the said result it is enough that the outside ilanges shall correspond tothe edges ot the sheet ot' paper which is manufactured, Y

Having new particularly described and ascertained the nature of our said invention and in what manner the same is to be performed, we declare that what we claim is l. A suction-box tor paper-making inachrines, comprising iXed end supports, a pair of upper rolle-rs journalled .in said end supports and each tangent atits upper sur- *face with the metallic cloth otfrthe machine, a third roller jour-nailed in said end supports and arranged beneath and in `Contact with said upper rollersso as to provide a suction space between said rollers, said end supports and the metallic cloth, the lower roller having its surface covered with rubber and adapted to drive the upper rollers at a peripheral speed equal to the linear speed ot the metallic cloth, and ahydraulic joint between each end of veach roller and its lend support. j ,Y 2. A suction-box as set forth in claim l, wherein the hydraulic joint atreach end of each roller comprises a ,ring on the inner cylindrical surface of the roller, a iixed boss, a socket supported on said `boss with provision for endwise play, a ring carried by said socket and arranged within the end of the roller with its outer edge face in engagement with the innerV edge tace of the ring carried by the roller, said coacting edge :taces having corresponding coacting circular grooves therein, and a rubber band secured to the boss and socket 4and eXerting'its tensv sion to maintain a tight contact between said rings.

3. A suction-box as set forth in claim 1,'

including means adaptingsaid suction-.box

to the manufacture of different widthsof paper, said means comprising two sets 'of aligned ldrums at the opposite ends of the suction-box supporting two parallel endless a joint with the edges of the sheetvot paper,

thereby insuring the closing ot. the suction space.

eoV

"r. r)The combination with a main'suctionbox of a given length, Otan auxiliary suction-box arranged in cooperative relation to said main suction-box, said auxiliary suctron-box being longitudinally slidable in a dir ction parallel to the longitudinal axis 4ot the main `suction-boxn In testimony whereof we have signed our name to this specification inthe presence of two subscribing witnesses.

ERNEST LAMORT. MARCEL LAMORT.

lVitnesses JULES, FAYOLEET, ANDR BoizDiLLoN. 

